78% (1979)

70% (1972)

78% (1957)

0% (1970)

72% (1976)

75% (1979)

0% (1986)

85% (1983)

69% (1978)

0% (1986)

80% (1972)

0% (1988)

45% (1988)

70% (1978)

70% (1968)

83% (1980)

68% (1983)

87% (1971)

10% (1984)

70% (1968)